Question

if the sum of the radius of the base and height of a cylinder is 17.5 cm and the curved surface area of the cylinder is 308 CM square, find the total surface area of the cylinder.​

Answer 1

Answer:

eg-let the radius = r

let height = h

r+h=37,  h=37−r

TSA=2πrh+2πr  

2

=1628cm  

2

 

2πr(37−r)+2πr  

2

=1628cm  

2

 

2π(37r)=1628cm  

2

 

r=7

volume= πr  

2

h=π49(37−7)

=4615.8cm  

3

Step-by-step explanation:

Answer 2

Answer:

385cm^2

Step-by-step explanation:

r+h=17.5cm

h=17.5-r

CSA=308cm^2. TSA=?

2πrh=308

πrh=154

rh=49

r×(17.5-r)=49

17.5r-r^2=49

r^2-17.5r+49=0

r=17.5-10.5/2

r=3.5cm

TSA

=2πr(h+r)

=2×22/7×3.5(17.5)

=385cm^2